Joining jig



FIG. 1 is a perspective view of the joining jig;

FIG. 2 is a plan view;

FIG. 3 is an underside plan view;

FIG. 4 is a view from one side;

FIG. 5 is a view from a second side;

FIG. 6 is a view from a third side (the diagonal) at a first angle (vertical); and,

FIG. 7 is a view from the third side at a second angle (horizontal). 

The ornamental design for a joining jig, as shown and described. 